Buggy code:
public class ApplicationContextMock implements Serializable , ApplicationContext { private static final long serialVersionUID = 1L ; private final Map < String , Object > beans = new HashMap < String , Object > ( ) ; public void putBean ( final String name , final Object bean ) { } public void putBean ( final Object bean ) { } public Object getBean ( final String name ) throws BeansException { } @ SuppressWarnings ( { "unchecked" } ) public < T > T getBean ( String name , Class < T > requiredType ) throws BeansException { } @ SuppressWarnings ( { "unchecked" } ) public < T > Map < String , T > getBeansOfType ( Class < T > type ) throws BeansException { } public < T > T getBean ( Class < T > requiredType ) throws BeansException { Iterator < T > beans = getBeansOfType ( requiredType ) . values ( ) . iterator ( ) ; if ( ( beans . hasNext ( ) ) == false ) { throw new NoSuchBeanDefinitionException ( ( ( "bean<seq2seq4repair_space>of<seq2seq4repair_space>required<seq2seq4repair_space>type<seq2seq4repair_space>" + requiredType ) + "<seq2seq4repair_space>not<seq2seq4repair_space>found" ) ) ; } final T bean = beans . next ( ) ; <START_BUG> if ( ( beans . hasNext ( ) ) == false ) { <END_BUG> throw new NoSuchBeanDefinitionException ( ( ( "more<seq2seq4repair_space>than<seq2seq4repair_space>one<seq2seq4repair_space>bean<seq2seq4repair_space>of<seq2seq4repair_space>required<seq2seq4repair_space>type<seq2seq4repair_space>" + requiredType ) + "<seq2seq4repair_space>found" ) ) ; } return bean ; } public Map < String , Object > getBeansWithAnnotation ( Class < ? extends Annotation > annotationType ) throws BeansException { } public < A extends Annotation > A findAnnotationOnBean ( String beanName , Class < A > annotationType ) { } private < A extends Annotation > A findAnnotationOnClass ( Class < ? > cls , Class < A > annotationType ) { } public ApplicationContext getParent ( ) { } public String getDisplayName ( ) { } public long getStartupDate ( ) { } public void publishEvent ( final ApplicationEvent event ) { } public boolean containsBeanDefinition ( final String beanName ) { } public int getBeanDefinitionCount ( ) { } public String [ ] getBeanDefinitionNames ( ) { } @ SuppressWarnings ( { "unchecked" } ) public String [ ] getBeanNamesForType ( final Class type ) { } @ SuppressWarnings ( { "unchecked" } ) public String [ ] getBeanNamesForType ( Class type , boolean includeNonSingletons , boolean allowEagerInit ) { } public < T > Map < String , T > getBeansOfType ( Class < T > type , boolean includeNonSingletons , boolean allowEagerInit ) throws BeansException { } public boolean containsBean ( final String name ) { } public boolean isSingleton ( final String name ) throws NoSuchBeanDefinitionException { } public Class < ? > getType ( final String name ) throws NoSuchBeanDefinitionException { } public String [ ] getAliases ( final String name ) throws NoSuchBeanDefinitionException { } public BeanFactory getParentBeanFactory ( ) { } public String getMessage ( final String code , final Object [ ] args , final String defaultMessage , final Locale locale ) { } public String getMessage ( final String code , final Object [ ] args , final Locale locale ) throws NoSuchMessageException { } public String getMessage ( final MessageSourceResolvable resolvable , final Locale locale ) throws NoSuchMessageException { } public Resource [ ] getResources ( final String locationPattern ) throws IOException { } public Resource getResource ( final String location ) { } public AutowireCapableBeanFactory getAutowireCapableBeanFactory ( ) throws IllegalStateException { } public boolean containsLocalBean ( final String arg0 ) { } public ClassLoader getClassLoader ( ) { } public String getId ( ) { } public Object getBean ( final String name , final Object ... args ) throws BeansException { } public boolean isPrototype ( final String name ) throws NoSuchBeanDefinitionException { } @ SuppressWarnings ( { "unchecked" } ) public boolean isTypeMatch ( final String name , final Class targetType ) throws NoSuchBeanDefinitionException { } }

Fix:
if ( ( beans . hasNext ( ) ) != false ) {